Tunnel longitudinal blind pipe fixing structure

Abstract

The utility model discloses a tunnel longitudinal blind pipe fixing structure which comprises geotechnical cloth attached to a primary support and used for hanging a longitudinal blind pipe, the two ends of the geotechnical cloth are fixed through connecting pieces so that a triangular space can be formed in the geotechnical cloth, bagged gravel is filled in the triangular space, and a waterproof plate is arranged outside the geotechnical cloth. A waterproof plate pressing strip is arranged outside the waterproof plate, and a fixing piece used for fixing the longitudinal blind pipe is arranged outside the waterproof plate pressing strip. The fixing piece comprises a first steel bar and a second steel bar, the second steel bar is vertically arranged in the middle of the first steel bar, so that the first steel bar and the second steel bar jointly form a T-shaped structure, the second steel bar is anchored on the primary support, and the second steel bar is bent to enable the first steel bar to be tightly attached to the upper side of the longitudinal blind pipe. The longitudinal blind pipe fixing piece is firm in installation and fixation and easy to operate, and effectively solves the problem that floating is difficult to control in the pouring process of a longitudinal blind pipe; meanwhile, the operation labor requirement is lowered, the construction efficiency is improved, and the later reworking cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering. More specifically, the utility model relates to a fixing structure for longitudinal blind pipes in a tunnel. Background Art

[0002] Longitudinal blind pipes are arranged in each formwork of the inverted arch of the concrete structure of high-speed railway tunnels. During the traditional installation method of longitudinal blind pipes, they are prone to floating during concrete pouring, the positions of the blind pipes do not meet the requirements, the rework is difficult, and there are problems such as high maintenance costs, great difficulty, and affecting the construction period.

[0003] Therefore, there is an urgent need for a fixing structure for longitudinal pipes in a tunnel to solve the problem that longitudinal blind pipes are prone to floating during concrete pouring. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fixing structure for longitudinal blind pipes in a tunnel. The longitudinal blind pipe fixing parts are installed and fixed firmly, the operation is simple, effectively solving the problem that it is difficult to control the floating of longitudinal blind pipes during pouring. At the same time, it reduces the labor demand for operations, improves the construction efficiency, and reduces the later rework cost.

[0005] The technical solution adopted by the utility model to solve this technical problem is: providing a fixing structure for longitudinal blind pipes in a tunnel, including a geotextile that fits with the initial support and is used for hanging longitudinal blind pipes. Both ends of the geotextile are fixed through connecting parts, so that a triangular space is formed inside the geotextile. The triangular space is filled with bagged crushed stones. A waterproof board is arranged outside the geotextile, a waterproof board pressing strip is arranged outside the waterproof board, and a fixing part for fixing the longitudinal blind pipe is arranged outside the waterproof board pressing strip;

[0006] The fixing part includes a first reinforcing bar and a second reinforcing bar. The second reinforcing bar is vertically arranged in the middle of the first reinforcing bar, so that the first reinforcing bar and the second reinforcing bar together form a T-shaped structure. The second reinforcing bar is anchored on the initial support, and the second reinforcing bar is bent so that the first reinforcing bar closely adheres to the upper side of the longitudinal blind pipe.

[0007] Preferably, for the fixing structure of the longitudinal blind pipe in the tunnel, one end of the waterproof board pressing strip is fixed to the geotextile and the initial support through a rivet, and the other end is folded along the bottom of the longitudinal blind pipe to the upper side of the longitudinal blind pipe.

[0008] Preferably, for the fixing structure of the longitudinal blind pipe in the tunnel, both ends of the waterproof board pressing strip are arranged 20 cm above the longitudinal blind pipe.

[0009] Preferably, for the fixing structure of the longitudinal blind pipe in the tunnel, one end of the waterproof board is fixed to the geotextile and the upper outer wall of the initial support through a connecting part, and the other end extends downward and is fixed to the waterproof board pressing strip and the initial support below the rivet through a connecting part.

[0010] Preferably, for the longitudinal blind pipe fixing structure of the tunnel, the connecting piece includes a hot-melt washer and a nail, and the nail penetrates through the hot-melt washer and is inserted into the primary support.

[0011] Preferably, for the longitudinal blind pipe fixing structure of the tunnel, the first steel bar is a deformed bar and the second steel bar is a round bar.

[0012] Preferably, for the longitudinal blind pipe fixing structure of the tunnel, the length ratio of the first steel bar to the second steel bar is 5:6.

[0013] The utility model has at least the following beneficial effects:

[0014] 1. The function of the longitudinal blind pipe fixing device is fully exerted. Through the fixing device, the blind pipe is firmly fixed to the primary support surface, and no floating will occur during the pouring of concrete.

[0015] 2. The installation of the longitudinal blind pipe fixing device is simple, with high installation accuracy. The whole is made of steel components, which not only reduces the demand for operators, avoids the floating of the blind pipe, but also shortens the process cycle time.

[0016] Other advantages, objectives and features of the utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural diagram of a longitudinal blind pipe fixing structure of a tunnel of the utility model;

[0018] Figure 2 is a structural diagram of a fixing member in a longitudinal blind pipe fixing structure of a tunnel of the utility model;

[0019] Description of the reference numerals: 1. Primary support, 2. Geotextile, 3. Longitudinal blind pipe, 4. Waterproof board pressing strip, 5. Rivet, 6. Bagged crushed stone, 7. Waterproof board, 8. First steel bar, 9. Second steel bar, 10. Hot-melt washer, 11. Nail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes the utility model in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0021] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be applied to other implementation schemes, deformation schemes, improvement schemes, equivalent schemes and other technical schemes that do not deviate from the spirit and scope of the utility model.

[0022] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation to the present utility model.

[0023] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation to the quantity.

[0024] As Figure 1-2 shown, a preferred embodiment of the present utility model provides a longitudinal blind pipe fixing structure for a tunnel, including a geotextile 2 that fits with the primary support 1 and is used for hanging the longitudinal blind pipe 3. Both ends of the geotextile 2 are fixed by connecting pieces, so that a triangular space is formed inside the geotextile 2. The triangular space is filled with bagged crushed stones 6. A waterproof board 7 is arranged outside the geotextile 2, a waterproof board pressing strip 4 is arranged outside the waterproof board 7, and a fixing piece for fixing the longitudinal blind pipe 3 is arranged outside the waterproof board pressing strip 4; the fixing piece is used to prevent the longitudinal blind pipe 3 from easily floating up when pouring concrete, resulting in the position of the longitudinal blind pipe 3 not meeting the requirements and the difficulty of rework being large.

[0025] The fixing piece includes a first steel bar 8 and a second steel bar 9. The second steel bar 9 is vertically arranged in the middle of the first steel bar 8, so that the first steel bar 8 and the second steel bar 9 together form a T-shaped structure. The second steel bar 9 is anchored on the primary support 1, and the second steel bar 9 is bent so that the first steel bar 8 closely adheres to the upper side of the longitudinal pipe 3.

[0026] Furthermore, for the longitudinal blind pipe fixing structure of the tunnel, one end of the waterproof board pressing strip 4 and the geotextile 2 are fixed on the primary support 1 by rivets 5, and the other end is folded along the bottom of the longitudinal blind pipe 3 to the upper side of the longitudinal blind pipe 3. In this embodiment, a preferred implementation is to fix in the order of the primary support 1, the waterproof board pressing strip 4, and the geotextile 2 using the rivets 5.

[0027] Furthermore, for the longitudinal blind pipe fixing structure of the tunnel, both ends of the waterproof board pressing strip 4 are arranged 20 cm above the longitudinal blind pipe 3.

[0028] Furthermore, for the longitudinal blind drain fixing structure of the tunnel, one end of the waterproof board 7 and the geotextile 2 are fixed on the upper outer wall of the primary support 1 through a connecting piece, and the other end extends downward and is fixed on the primary support 1 below the rivet 5 through a connecting piece with the waterproof board pressing strip 4.

[0029] Furthermore, for the longitudinal blind drain fixing structure of the tunnel, the connecting piece includes a hot-melt washer 10 and a nail 11, and the nail 11 passes through the hot-melt washer 10 and is inserted into the primary support 1.

[0030] Furthermore, for the longitudinal blind drain fixing structure of the tunnel, the first steel bar 8 is a deformed bar, and the second steel bar 9 is a round bar. In this embodiment, a preferred implementation is that the first steel bar 8 is a Φ6 round bar and the second steel bar 9 is a Φ14 deformed bar.

[0031] Furthermore, for the longitudinal blind drain fixing structure of the tunnel, the length ratio of the first steel bar 8 to the second steel bar 9 is 5:6.

[0032] The specific construction method is as follows: Through the measurement and setting out of the inverted arch waterproof and drainage, determine the position of the structural longitudinal blind drain 3, install the geotextile 2, and install the waterproof board pressing strip 4 20 cm above the top of the longitudinal blind drain 3 according to the position of the longitudinal blind drain 3. Use the rivet 5 to fix in the order of the primary support 1, the waterproof board pressing strip 4, and the geotextile 2. Wrap the geotextile 2 from the bottom of the longitudinal blind drain 3 to above the longitudinal blind drain 3 and fix it with the hot-melt washer 10 and the nail 11. Before fixing, fill with bagged crushed stones 6, install the waterproof board 7, and let the waterproof board 7 go down along the geotextile 2 from the upper part of the primary support, then turn over through the bottom of the longitudinal blind drain 3 to below the rivet 5 and fix it with the hot-melt washer 10 and the nail 11. Wrap the waterproof board pressing strip 4 along the bottom of the longitudinal blind drain 3 to wrap the waterproof board 7 and turn it over and wrap it to 20 cm above the top of the longitudinal blind drain 3. Drill holes in the wall surface of the primary support 1 to anchor the second steel bar 9, and after fixing, bend the second steel bar 9 so that the first steel bar 8 is closely attached to the upper side of the longitudinal blind drain 3, thereby fixing the entire longitudinal blind drain structure.

[0033] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the description and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. A tunnel longitudinal blind pipe fixing structure, characterized in that: It includes a geotextile that fits with the initial support and is used to hang the longitudinal blind pipe. The two ends of the geotextile are fixed by connecting pieces, so that a triangular space is formed inside the geotextile. The triangular space is filled with bagged gravel. A waterproof board is arranged outside the geotextile, a waterproof board strip is arranged outside the waterproof board, and a fixing piece for fixing the longitudinal blind pipe is arranged outside the waterproof board strip; The fixing part includes a No. 1 steel bar and a No. 2 steel bar. The No. 2 steel bar is vertically arranged in the middle of the No. 1 steel bar so that the No. 1 steel bar and the No. 2 steel bar together form a T-shaped structure. The No. 2 steel bar is anchored on the initial support. The No. 2 steel bar is bent so that the No. 1 steel bar is closely attached to the upper side of the longitudinal blind pipe.

2. The tunnel longitudinal blind pipe fixing structure according to claim 1, characterized in that: One end of the waterproof board layer is fixed to the geotextile on the initial support through rivets, and the other end is folded along the bottom of the longitudinal blind pipe to the upper side of the longitudinal blind pipe.

3. The tunnel longitudinal blind pipe fixing structure according to claim 2, characterized in that: Both ends of the waterproof board layer are arranged 20 cm above the longitudinal blind pipe.

4. The tunnel longitudinal blind pipe fixing structure according to claim 2, characterized in that: One end of the waterproof board is fixed to the upper outer wall of the initial support through a connecting piece with the geotextile, and the other end extends downward and is fixed to the initial support below the rivet through a connecting piece with the waterproof board strip.

5. The tunnel longitudinal blind pipe fixing structure according to claim 1 or 4, characterized in that: The connecting piece comprises a hot-melt washer and a nail, wherein the nail is passed through the hot-melt washer and inserted into the initial support.

6. The tunnel longitudinal blind pipe fixing structure according to claim 1, characterized in that: The No. 1 steel bar is threaded steel bar, and the No. 2 steel bar is round steel bar.

7. The tunnel longitudinal blind pipe fixing structure according to claim 1, characterized in that: The length ratio of the No. 1 steel bar to the No. 2 steel bar is 5:6.

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